Satellite communication device, core network device, control circuit, storage medium, and quality of service control method

Abstract

A satellite communication ground station as a satellite communication device performs communication control of a satellite backhaul link in a mobile communication system in which a ground base station and a core network device are connected via the satellite backhaul link, the satellite communication ground station including: a storage unit that stores a conversion table used in converting quality of service indicators that have different forms in the mobile communication system and the satellite backhaul link; and a quality of service indicator updating unit that updates priority of the quality of service indicator including priority of wireless communication of the satellite backhaul link in the conversion table on the basis of a result of evaluation of quality of service for each quality of service indicator.

What is claimed is: 
     
       1. A satellite communication device that performs communication control of a satellite backhaul link in a mobile communication system in which a ground base station and a core network device are connected via the satellite backhaul link, the satellite communication device comprising:
 a memory to store a conversion table used in converting a quality of service indicator that has a different form in each of the mobile communication system and the satellite backhaul link; and 
 quality of service indicator updating circuitry to update priority of the quality of service indicator including priority of wireless communication of the satellite backhaul link in the conversion table on the basis of a result of evaluation of quality of service for each quality of service indicator, wherein 
 the result of evaluation of quality of service is determined based on an amount of dwell for each quality of service indicator. 
 
     
     
       2. The satellite communication device according to  claim 1 , wherein
 in a case where the result of evaluation indicates a decrease in the quality of service, the quality of service indicator updating circuitry updates the conversion table so as to increase the priority of the quality of service indicator corresponding to the result of evaluation. 
 
     
     
       3. The satellite communication device according to  claim 2 , comprising
 modem circuitry to duplicate and transmit data to be transmitted to the ground base station. 
 
     
     
       4. A core network device in a mobile communication system in which a ground base station and the core network device are connected via a satellite backhaul link, the core network device comprising:
 a memory to store a conversion table used in converting a quality of service indicator that has a different form in each of the mobile communication system and the satellite backhaul link; 
 quality of service indicator updating circuitry to update priority of the quality of service indicator including priority of wireless communication of the satellite backhaul link in the conversion table on the basis of a result of evaluation of quality of service for each quality of service indicator; and 
 data processing circuitry to attach information on the priority updated to data to be transmitted to the ground base station, wherein 
 the result of evaluation of quality of service is determined based on an amount of dwell for each quality of service indicator. 
 
     
     
       5. The core network device according to  claim 4 , wherein
 the data processing circuitry attaches the information on the priority updated to an Ethernet header of the data. 
 
     
     
       6. The core network device according to  claim 4 , wherein
 the data processing circuitry attaches the information on the priority updated to an Internet protocol header of the data. 
 
     
     
       7. The core network device according to  claim 4 , wherein
 in a case where the result of evaluation indicates a decrease in the quality of service, the quality of service indicator updating circuitry updates the conversion table so as to increase the priority of the quality of service indicator corresponding to the result of evaluation. 
 
     
     
       8. The core network device according to  claim 5 , wherein
 in a case where the result of evaluation indicates a decrease in the quality of service, the quality of service indicator updating circuitry updates the conversion table so as to increase the priority of the quality of service indicator corresponding to the result of evaluation. 
 
     
     
       9. The core network device according to  claim 6 , wherein
 in a case where the result of evaluation indicates a decrease in the quality of service, the quality of service indicator updating circuitry updates the conversion table so as to increase the priority of the quality of service indicator corresponding to the result of evaluation. 
 
     
     
       10. The core network device according to  claim 7 , wherein
 the data processing circuitry duplicates and transmits the data. 
 
     
     
       11. The core network device according to  claim 8 , wherein
 the data processing circuitry duplicates and transmits the data. 
 
     
     
       12. The core network device according to  claim 9 , wherein
 the data processing circuitry duplicates and transmits the data. 
 
     
     
       13. A control circuit to control a satellite communication device that performs communication control of a satellite backhaul link in a mobile communication system in which a ground base station and a core network device are connected via the satellite backhaul link, the control circuit causing a wireless communication device to execute:
 storing a conversion table used in converting a quality of service indicator that has a different form in each of the mobile communication system and the satellite backhaul link; and 
 updating priority of the quality of service indicator including priority of wireless communication of the satellite backhaul link in the conversion table on the basis of a result of evaluation of quality of service for each quality of service indicator, wherein 
 the result of evaluation of quality of service is determined based on an amount of dwell for each quality of service indicator. 
 
     
     
       14. A control circuit to control a core network device in a mobile communication system in which a ground base station and the core network device are connected via a satellite backhaul link, the control circuit causing the core network device to execute:
 storing a conversion table used in converting a quality of service indicator that has a different form in each of the mobile communication system and the satellite backhaul link; 
 updating priority of the quality of service indicator including priority of wireless communication of the satellite backhaul link in the conversion table on the basis of a result of evaluation of quality of service for each quality of service indicator; and 
 attaching information on the priority updated to data to be transmitted to the ground base station, wherein 
 the result of evaluation of quality of service is determined based on an amount of dwell for each quality of service indicator. 
 
     
     
       15. A non-transitory storage medium storing a program to control a satellite communication device that performs communication control of a satellite backhaul link in a mobile communication system in which a ground base station and a core network device are connected via the satellite backhaul link, wherein
 the program causes a wireless communication device to execute: 
 storing a conversion table used in converting a quality of service indicator that has a different form in each of the mobile communication system and the satellite backhaul link; and 
 updating priority of the quality of service indicator including priority of wireless communication of the satellite backhaul link in the conversion table on the basis of a result of evaluation of quality of service for each quality of service indicator, wherein 
 the result of evaluation of quality of service is determined based on an amount of dwell for each quality of service indicator. 
 
     
     
       16. A non-transitory storage medium storing a program to control a core network device in a mobile communication system in which a ground base station and the core network device are connected via a satellite backhaul link, wherein
 the program causes the core network device to execute: 
 storing a conversion table used in converting a quality of service indicator that has a different form in each of the mobile communication system and the satellite backhaul link; 
 updating priority of the quality of service indicator including priority of wireless communication of the satellite backhaul link in the conversion table on the basis of a result of evaluation of quality of service for each quality of service indicator; and 
 attaching information on the priority updated to data to be transmitted to the ground base station, wherein 
 the result of evaluation of quality of service is determined based on an amount of dwell for each quality of service indicator. 
 
     
     
       17. A quality of service control method in a satellite communication device that performs communication control of a satellite backhaul link in a mobile communication system in which a ground base station and a core network device are connected via the satellite backhaul link, the quality of service control method comprising:
 storing a conversion table used in converting a quality of service indicator that has a different form in each of the mobile communication system and the satellite backhaul link; and 
 updating priority of the quality of service indicator including priority of wireless communication of the satellite backhaul link in the conversion table on the basis of a result of evaluation of quality of service for each quality of service indicator, wherein 
 the quality of service control method further comprises determining the result of evaluation of quality of service based on an amount of dwell for each quality of service indicator. 
 
     
     
       18. A quality of service control method in a core network device in a mobile communication system in which a ground base station and the core network device are connected via a satellite backhaul link, the quality of service control method comprising:
 storing a conversion table used in converting a quality of service indicator that has a different form in each of the mobile communication system and the satellite backhaul link; 
 updating priority of the quality of service indicator including priority of wireless communication of the satellite backhaul link in the conversion table on the basis of a result of evaluation of quality of service for each quality of service indicator; and 
 attaching information on the priority updated to data to be transmitted to the ground base station, wherein 
 the quality of service control method further comprises determining the result of evaluation of quality of service based on an amount of dwell for each quality of service indicator. 
 
     
     
       19. The satellite communication device according to  claim 1 , wherein
 the quality of service indicator including priority of wireless communication of the satellite backhaul link is a first quality of service indicator, and a quality of service indicator having a different form from the first quality of service indicator is a second quality of service indicator, and 
 the quality of service indicator updating circuitry sets a threshold for the amount of dwell for each first quality of service indicator or each second quality of service indicator, compares the amount of dwell with the threshold to evaluate the amount of dwell, and, when the amount of dwell for a given second quality of service indicator exceeds the threshold, updates the conversion table so as to change the priority of the first quality of service indicator corresponding to the given second quality of service indicator such that the amount of dwell for the given second quality of service indicator becomes less than or equal to the threshold of the given second quality of service indicator.